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Journal article

Factors affecting reproductive performance of dairy cows.

Coleman D, Thayne W, Dailey R ...see all

Journal of dairy science, vol. 68, issue 7 (1985) pp. 1793-1803

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We conducted two studies to determine how herd management practices and traits of individual cows affect performance of the herd and of the cow within a herd. Management practices, reproductive performance of the herd, and relationships between management and reproductive performance were characterized on 83 dairy farms with 7596 cows. Data included 21 management variables (e.g., facilities, herd health program, estrous detection program) and 8 performance variables obtained from Dairy Herd Improvement or unofficial records (e.g., size of herd, production, days open). Although varying among herds, annual average herd incidences of reproductive disorders and reproductive performance were similar to those reported. Managerial practices influenced incidences of retained placenta and uterine infection, days open of cows not bred and of all cows, services per conception, and percentages of herd open more than 100 days and culled for low production. Veterinarian was the most consistent variable influencing herd reproductive performance. Data also were collected from production and lifetime records of 2532 cows in 19 herds. Reproductive performance was affected by season of calving, production, maturity, and reproductive disorders. Several cows with extremely poor reproductive records were maintained.

Author-supplied keywords

  • Animal
  • Animal Husbandry
  • Animal Husbandry: methods
  • Animals
  • Cattle
  • Cattle Diseases
  • Cattle Diseases: epidemiology
  • Cattle: physiology
  • Dairying
  • Dairying: methods
  • Estrus Detection
  • Female
  • Female: epidemiology
  • Female: veterinary
  • Housing
  • Infertility
  • Obstetric Labor Complications
  • Obstetric Labor Complications: epidemiology
  • Obstetric Labor Complications: veterinary
  • Physical Examination
  • Physical Examination: veterinary
  • Pregnancy
  • Puerperal Infection
  • Puerperal Infection: epidemiology
  • Puerperal Infection: veterinary
  • Reproduction

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  • D a Coleman

  • W V Thayne

  • R a Dailey

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